# Copyright 2016 Julian Ospald <hasufell@posteo.de>
# Distributed under the terms of the GNU General Public License v2

require github [ user="FStarLang" project="FStar" ]

SUMMARY="An ML-like language with a type system for program verification"
DESCRIPTION="
F* (pronounced F star) is an ML-like functional programming language aimed at
program verification. Its type system includes polymorphism, dependent types,
monadic effects, refinement types, and a weakest precondition calculus.
Together, these features allow expressing precise and compact specifications for
programs, including functional correctness and security properties. The F* type-
checker aims to prove that programs meet their specifications using a
combination of SMT solving and manual proofs. Programs written in F* can be
translated to OCaml or F# for execution.
"
HOMEPAGE="https://www.fstar-lang.org ${HOMEPAGE}"

LICENCES="Apache-2.0"
SLOT="0"
PLATFORMS="~amd64"
MYOPTIONS=""

DEPENDENCIES="
    build:
        dev-lang/fsharp
        dev-lang/ocaml[>=4.02.2]
        dev-ocaml/batteries
        dev-ocaml/findlib
        dev-ocaml/yojson
        dev-ocaml/zarith
    build+run:
        dev-libs/gmp:=
    run:
        sci-apps/z3
"

BUGS_TO="hasufell@posteo.de"

src_compile() {
    # Step 1. Building F* from sources using the F# compiler
    esandbox disable_net
    emake -C src
    esandbox enable_net
    # Step 2. Extracting the sources of F* itself to OCaml
    emake ocaml -C src
    # Step 3. Building F* from the OCaml snapshot
    emake -C src/ocaml-output
}

src_install() {
    insinto /usr/$(exhost --target)/lib/fstar
    doins -r lib contrib bin
    edo chmod +x "${IMAGE%/}"/usr/$(exhost --target)/lib/fstar/bin/{fstar.exe,fstar-any.sh,tests.exe,tests-mono.sh}
    dodoc -r doc/*

    dodir /usr/$(exhost --target)/bin
    dosym ../lib/fstar/bin/fstar.exe /usr/$(exhost --target)/bin/fstar
}